diff --git a/pkgs/development/coq-modules/parsec/default.nix b/pkgs/development/coq-modules/parsec/default.nix
index fa1aa3c8399..fc8fef5a4d6 100644
--- a/pkgs/development/coq-modules/parsec/default.nix
+++ b/pkgs/development/coq-modules/parsec/default.nix
@@ -11,12 +11,16 @@ mkCoqDerivation {
   releaseRev = (v: "v${v}");
 
   inherit version;
-  defaultVersion = if versions.range "8.12" "8.13" coq.version then "0.1.0" else null;
+  defaultVersion = with versions; switch coq.version [
+    { case = range "8.12" "8.15"; out = "0.1.1"; }
+    { case = range "8.12" "8.13"; out = "0.1.0"; }
+  ] null;
+  release."0.1.1".sha256 = "sha256:1c0l18s68pzd4c8i3jimh2yz0pqm4g38pca4bm7fr18r8xmqf189";
   release."0.1.0".sha256 = "sha256:01avfcqirz2b9wjzi9iywbhz9szybpnnj3672dgkfsimyg9jgnsr";
 
   meta = {
     description = "Library for serialization to S-expressions";
-    license = licenses.mit;
+    license = licenses.bsd3;
     maintainers = with maintainers; [ Zimmi48 ];
   };
 }